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S. H. BOLTZ.

GAR WINDOW.

(No Model No. 592,980. Patented Nov. 2,1897.

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UNITED STATES PATENT Orrrcn.

SOLOMON ll. BOLTZ, OF READING, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JONATHAN I. SLOAT, OF SAME PLACE.

CAR-WINDOW.

SPECIFICATION forming part of Letters Patent No. 592,980, dated November 2, 1897. Application filed June 2,1897. serum. 639,099. (NomodeL) To all whom it may concern.-

Be it known that I, SOLOMON H. BOLTZ, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Oar-Windows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in windows, and is intended more particularly for use on passenger-cars.

The object of the invention is to provide a window that is easily operated, one that can be securely retained at any desired height and in which a screen can be used in connection therewith without any more inconvenience than with an ordinary window, and one that is substantially automatic.

The invention is fully set forth in the following specification and clearly illustrated in the accompanying drawings.

Figure 1 is an elevation of a window embodying my invention, showing a portion of the frame cut away. Fig. 2 is avertical section taken on line so to, Fig. 1. Fig. 3 is a de tail of the screen-attaching device. Fig. 4 is a detail of the friction-roller.

The frame A is of ordinary construction and is comprised of the usual strips, sill, &c., but the strips a are made hollow in the present construction, and coiled springs s are socured therein at a point near the top thereof. The lower ends of said springs are secured to the lower portion of the sash B.

A spring thumb-bolt, such as are ordinarily used on car-windows, is attached to one side of the sash, and when this is released from its hold i the frame the sash will be raised or partially raised by means of the coiled springs s, which assume their normal position when the sash is elevated.

In the space between the edges of the sash and the body of the frame along the ways in which the sash travels I have provided friction rollers R. These rollers are loosely strung on spring-wires, which are embedded in the edges of the sash with a tendency to spring outward or against the inner surface of the frame. I have shown two of these roll ers on each side of the sash, and by means of these the sash will operate with a minimum amount of friction and the swelling of the sash or frame will not affect the ease with which the sash may be operated.

In the casing 0 below the window I provide a roller D, mounted on hangers (Z, and on which is wound a screen of any suitable ma- 6:: terial.

A supplemental roller F is arranged a short distance from and above this roller and on line with the opening a, in the sill, through which the screen passes.

On the top of the sill, immediately inside of the sash, are pivoted two arms 0, which arms are connected by an operating-rod G and which are secured to the end of the screen. These arms are adapted to swing around their pivotal points, and their ends are arranged to engage the grooves b in the face of the sash near its lower end. When these arms are thrown into engagement with the sash and the sash is elevated, it will draw up withit the screen through the opening in the sill.

The supplemental roller F serves to keep the screen on the proper line with the opening a as it is wound or unwound to or from the main roller D. This roller D is operated by means of any suitable spring device (not shown) for winding the screen thereon when the window is closed.

The ease and satisfaction with which my window is operated and the simplicity of its construction are apparent. There is no exertion required more than to release the thumb-bolt,and the window will rise,together with the screen or independent thereof, if desired, automatically. go

If the screen is not wanted in use, it can very readily be detached from its connection with the sash by simply shifting the operating-rod G.

Having thus fully described my present in- 5 vention and its method of operation, what I claim, and desire to secure by Letters Patout, is

In a car-window the frame A having hol- 10w strips a! at either side thereof in which I00 are secured coiled springs s, the sash traveling in said frame, having said springs at- 10 said sash having friction-rollers R mounted on wire springs and embedded in the edges thereof and adapted to bear against the frame in the ways in which said sash travels, all substantially as and for the purpose set forth.

In testimony whereof I affix my signature 1 5 in presence of two witnesses.

SOLOMON H. BOLTZ.

Witnesses:

ED. A. KELLY, JOHN M. SMITH. 

